What map unit (Centimorgan) is adopted in the construction of genetic maps?

Options

A. A unit of distance between genes on chromosomes, representing 50% cross over
B. A unit of distance between two expressed genes, representing 10% cross over
C. A unit of distance between two expressed genes, representing 100% cross over
D. A unit of distance between genes on chromosomes, representing 1% cross over

Answer

D

Explanation

1 map unit represent 1 % cross over. Map unit is used to measure genetic distance. This genetic distance is based on average number of cross over frequency.